CN217877895U - Pneumatic detection device for molten steel liquid level in metallurgical ladle - Google Patents
Pneumatic detection device for molten steel liquid level in metallurgical ladle Download PDFInfo
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- CN217877895U CN217877895U CN202221807219.9U CN202221807219U CN217877895U CN 217877895 U CN217877895 U CN 217877895U CN 202221807219 U CN202221807219 U CN 202221807219U CN 217877895 U CN217877895 U CN 217877895U
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- molten steel
- liquid level
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- pressure
- steel liquid
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 239000007788 liquid Substances 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052786 argon Inorganic materials 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000011449 brick Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000009749 continuous casting Methods 0.000 abstract description 10
- 238000011897 real-time detection Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008447 perception Effects 0.000 abstract description 4
- 238000009628 steelmaking Methods 0.000 abstract description 4
- -1 pre-buried pipeline Substances 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 5
- 238000012795 verification Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
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Abstract
The utility model discloses a pneumatic detection device of molten steel liquid level in metallurgical package mainly comprises inclusion, detection air brick, pre-buried pipeline, argon gas source, pressure and flow sensor, host computer, the inclusion is provided with detection air brick and pre-buried pipeline, the external argon gas source of pre-buried management is equipped with pressure and flow sensor on the pipeline. In this way, the utility model provides a pneumatic detection device of molten steel liquid level in metallurgical package detects the critical surface pressure of pipeline through the mode of pouring into argon gas compressed gas to the altitude variation of safety, the real-time perception molten steel liquid level of efficient satisfies metallurgical package molten steel liquid level real-time detection and continuous control's demand in the metallurgical production, provides technical support for the automation and the unmanned realization of the relevant technology section of metallurgical steelmaking and continuous casting production.
Description
Technical Field
The utility model relates to a metallurgical package field of continuous casting especially relates to a pneumatic detection device of molten steel liquid level in metallurgical package.
Background
The continuous casting production line mainly makes molten steel into a billet raw material, quantitative molten steel needs to be provided for a continuous casting production process, the production process is stopped directly due to insufficient molten steel in a metallurgical ladle, and steel ladle leakage and other dangers are caused due to excessive molten steel. The detection of the molten steel amount and the molten steel liquid level in the metallurgical ladle is one of the technical problems in the related field, and because the field working condition is severe, the heat radiation is large, the dust is high, and each process section has the requirement of real-time detection on the molten steel capacity and the liquid level in the metallurgical ladle. In the existing actual production, the position of a liquid level is generally known in a manual observation mode, the molten steel injection amount in a metallurgical ladle is manually controlled, and the operation environment is severe and has certain dangerousness.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a pneumatic detection device of molten steel liquid level in metallurgical package, install and detect the air brick at the working layer, set up pre-buried pipeline on permanent layer, detect critical face pressure through the mode of pouring into argon gas compressed gas into, thereby safety, the altitude variation of the real-time perception molten steel liquid level of efficient, the demand of metallurgical package molten steel liquid level real-time detection and continuous control in satisfying metallurgical production, automatic and unmanned realization for metallurgical steelmaking and continuous casting production's relevant technology section provides technical support.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a pneumatic detection device of molten steel liquid level in metallurgical package, including inclusion, the mouth of a river, detection air brick, pre-buried pipeline, fast interface, argon gas source, pressure and flow sensor, host computer, the inclusion bottom is provided with the mouth of a river, the inclusion has set gradually working layer, permanent layer, heat insulation layer and shell body from inside to outside, the working layer inner wall is provided with around the mouth of a river and detects the air brick, be provided with pre-buried pipeline between permanent layer and the heat insulation layer, pre-buried pipeline one end is connected and is detected the air brick, and the other end is worn out and is connected the argon gas source through fast interface from the shell body, pre-buried pipeline inscription pressure and flow sensor, pressure and flow sensor connect the host computer outward.
In a preferred embodiment of the present invention, the diameter of the embedded pipeline is greater than 15mm.
In a preferred embodiment of the present invention, the upper computer is integrated with a DPU data processor and a display instrument.
In a preferred embodiment of the present invention, a filtering and pressure reducing device is disposed at the rear end of the argon gas source.
In a preferred embodiment of the present invention, the pressure maintaining step further comprises a critical value disturbance verification test, wherein the critical value disturbance verification test process gives fluctuation to the pressure inside the pre-buried pipeline within a range of ± 0.2bar, and detects the relevant feedback.
The beneficial effects of the utility model are that: the utility model provides a pair of pneumatic detection device of molten steel liquid level in metallurgical package detects the air brick at the working layer installation, sets up pre-buried pipeline on permanent layer, detects critical surface pressure through the mode of pouring into argon gas compressed gas into to safety, the high change of the real-time perception molten steel liquid level of efficient satisfy metallurgical production in metallurgical package molten steel liquid level real-time detection and continuous control's demand, realize providing technical support for the automation and the unmanned realization of metallurgical steelmaking and continuous casting production's relevant technology section.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a complete structure diagram of a preferred embodiment of the pneumatic molten steel level detecting device in a metallurgical ladle according to the present invention;
FIG. 2 is an enlarged view of a part of the bag body according to a preferred embodiment of the pneumatic molten steel level detecting device in the metallurgical ladle of the present invention;
fig. 3 is a wiring structure diagram of a pre-buried pipeline according to a preferred embodiment of the pneumatic molten steel level detecting device in the metallurgical ladle of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the embodiment of the present invention includes:
the utility model provides a pneumatic detection device of molten steel liquid level in metallurgical package, includes inclusion 1, the mouth of a river 2, detects air brick 3, pre-buried pipeline 4, quick interface 5, argon gas source 6, pressure and flow sensor 7, host computer 8, 1 bottom of inclusion is provided with the mouth of a river 2, inclusion 1 has set gradually working layer 101, permanent layer 102, heat insulation layer 103 and shell body 104 from inside to outside, working layer 101 inner wall is provided with around the mouth of a river 2 and detects air brick 3, be provided with pre-buried pipeline 4 between permanent layer 102 and heat insulation layer 103, pre-buried pipeline 4 one end is connected and is detected air brick 3, and the other end is worn out and is connected argon gas source 6 through quick interface 5 from shell body 104, pre-buried pipeline 4 inscription pressure and flow sensor 7, pressure and flow sensor 7 outsert host computer 8.
Wherein, the diameter of the embedded pipeline 4 is larger than 15mm.
Further, the upper computer 8 is integrated with a DPU data processor and a display instrument.
Furthermore, a filtering and pressure reducing device 9 is arranged at the rear end of the argon gas source 6.
A pneumatic detection method for molten steel liquid level comprises the following steps:
gas injection: filling an argon gas source into the embedded pipeline to release compressed gas;
initialization: the real-time data collected by the pressure and flow sensor is uploaded to an upper computer to obtain pressure data P in the embedded pipeline Measuring And flow velocity data v Measuring ；
Dynamic modeling: the device controls an argon gas source to pressurize the pre-buried pipeline, so that pressure data is increased until the flow rate data is zero-breaking critical;
detection of an equilibrium state: under the condition of establishing an argon system and a molten steel related static balance state, detecting and analyzing data of related pressure and flow of the system, and combining a related fluid model to obtain molten steel liquid level data;
static pressure calculation: the upper computer is according to a formula P Steel =ρ Steel gh Steel Calculating to obtain the liquid level height h Steel =P Steel /ρ Steel g，
P Steel Actual ferrostatic pressure;
h steel The liquid level height of the measured molten steel is measured;
ρ steel Is the molten steel density.
Said pressure data P Measuring = P Steel +ΔP Decrease in the thickness of the steel ，ΔP Damage to For the on-way pressure loss, Δ P, of the pre-buried pipeline 4 Loss = λ Pipe ·（l Pipe /d Pipe ）·（ρ Argon gas v Measuring 2 /2），
λ Pipe To detect a correlation constant of the fluid line;
l pipe The length from a pressure and flow sensor 7 to a detection air brick 3 is connected with the pre-buried pipeline 4;
d pipe The sectional area of the pre-buried pipeline 4 is adopted;
ρ argon gas Is the argon density.
The equilibrium state detection step also comprises a critical value disturbance verification test, wherein in the critical value disturbance verification test process, the pressure inside the embedded pipeline is given to fluctuation given within the range of +/-0.2 bar, and relevant feedback is detected.
This product is used in the continuous casting production line, and the ladle cover of metallurgical package connects the long mouth of a river of ladle, and the inside plug rod butt joint mouth of a river 2 of pegging graft of metallurgical package, molten steel from mouth of a river 2 through immersion nozzle ration inflow continuous casting production line of mouth of a river in the metallurgical package.
In the continuous casting production process, the molten steel liquid level in the bag body 1 is continuously reduced, and the molten steel static pressure is synchronously reduced in the reduction process. In order to obtain the liquid level height in real time, the ferrostatic pressure is only required to be calculated according to a density formula. The detection of the molten steel static pressure can be realized by the pneumatic detection method of the molten steel liquid level, the product fills the whole gas circuit (namely the embedded pipeline 4) with argon, the pressure of the gas circuit is smaller than the molten steel static pressure in the initial state, and the argon in the pipe is continuously pressurized for the embedded pipeline 4 until the pressure of the argon exceeds the molten steel pressure. When the bag is in a temporary connection state, argon can be leaked into the bag body 1 from the detection air brick 3, and the flow velocity of the argon in the embedded pipeline 4 is generated along with the argon. Keeping the flow velocity stable can obtain stable argon pressure of the embedded pipeline 4, and the pressure can offset the ferrostatic pressure to ensure that the argon can overflow in a critical way. The actual hydrostatic pressure of the molten steel also needs to consider the pressure loss of the embedded pipeline 4, and the real-time liquid level height of the molten steel can be accurately obtained by deducting the loss. The detection system adjusts the pressure and flow of argon supply in real time along with the height of the liquid level of molten steel, and controls the liquid level to be in a relative equilibrium state so as to facilitate detection.
To sum up, the utility model provides a pneumatic detection device of molten steel liquid level in metallurgical package detects the air brick at the installation of working layer, sets up pre-buried pipeline on permanent layer, detects critical face pressure through the mode of pouring into argon gas compressed gas to the altitude variation of safe, the real-time perception molten steel liquid level of efficient satisfies metallurgical package molten steel liquid level real-time detection and continuous control's demand in the metallurgical production, realizes providing technical support for the automation and the unmanned realization of metallurgical steelmaking and continuous casting production's relevant technology section.
The above-mentioned only be the embodiment of the utility model, not consequently the restriction the patent scope of the utility model, all utilize the equivalent structure or equivalent flow transform that the content of the specification was done, or directly or indirectly use in other relevant technical field, all the same reason is included in the patent protection scope of the utility model.
Claims (4)
1. The utility model provides a pneumatic detection device of molten steel liquid level in metallurgical package, a serial communication port, including inclusion, the mouth of a river of going up, detection air brick, pre-buried pipeline, fast interface, argon gas source, pressure and flow sensor, host computer, the inclusion bottom is provided with the mouth of a river of going up, the inclusion has set gradually working layer, permanent layer, heat insulation layer and shell body from inside to outside, the working layer inner wall is provided with around the mouth of a river of going up and detects the air brick, be provided with pre-buried pipeline between permanent layer and the heat insulation layer, pre-buried pipeline one end is connected and is detected the air brick, and the other end is worn out and is connected the argon gas source through fast interface from the shell body, pre-buried pipeline inscription pressure and flow sensor, pressure and flow sensor external host computer.
2. The pneumatic molten steel liquid level detection device in the metallurgical ladle according to claim 1, wherein the diameter of the embedded pipeline is larger than 15mm.
3. The pneumatic molten steel liquid level detection device in the metallurgical ladle according to claim 1, wherein the upper computer is integrated with a DPU data processor and a display instrument.
4. The pneumatic molten steel liquid level detection device in a metallurgical ladle according to claim 1, wherein a filtering and pressure reducing device is arranged at the rear end of the argon source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221807219.9U CN217877895U (en) | 2022-07-14 | 2022-07-14 | Pneumatic detection device for molten steel liquid level in metallurgical ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221807219.9U CN217877895U (en) | 2022-07-14 | 2022-07-14 | Pneumatic detection device for molten steel liquid level in metallurgical ladle |
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| Publication Number | Publication Date |
|---|---|
| CN217877895U true CN217877895U (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221807219.9U Active CN217877895U (en) | 2022-07-14 | 2022-07-14 | Pneumatic detection device for molten steel liquid level in metallurgical ladle |
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| Country | Link |
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| CN (1) | CN217877895U (en) |
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2022
- 2022-07-14 CN CN202221807219.9U patent/CN217877895U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240416 Address after: Building 3, No. 31 Maojia Road, Baoshan District, Shanghai, 201908 Patentee after: Shanghai Huayuantong Intelligent Technology Co.,Ltd. Country or region after: China Address before: 311800 Shuangqiao Village, Huandong street, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HUAYUANTONG METALLURGICAL TECHNOLOGY Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |